Outrigger holder clamps easily to your T-top or tower with no welding required. User-friendly design means you just have to drill one 1/4" hole into the IPS schedule pipe of your T-top, and clamp on the holder. Adjustable clamp lets you customize the angle and choose from multiple fishing positions. Stainless steel construction resists the damaging effects of saltwater and other corrosive elements. 1.9" ID.